The sanctioning body approved the cars with back seat removed and upgrades to the Corsa engine increasing horsepower and torque.
The 100 1966 Corsas that received certification were all painted white and most had blue striping, and were named "Yenko Stingers".
Yenko continued to modify Corvair coupes as Stingers for the rest of the car's production run.
The book lists many original and subsequent owners, as well as known racing history with much information on all of the cars that were produced.
The high performance and limited production of all Yenko-modified cars makes them valuable and prized to collectors.